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Figure 1 Yale clinical Text Analysis and Knowledge Extraction Systerr Extensions (YTEX) pipeline. New annotators developed as part of this study are shaded in gray. DB, database.

Figure 1 Yale clinical Text Analysis and Knowledge Extraction Systerr Extensions (YTEX) pipeline. New annotators developed as part of this study are shaded in gray. DB, database.

Related Figures (5)

Figure 2 Bag-of-Words Exporter pivots instance id, attribute name, attribute value triples into a sparse matrix.
Figure 2 Bag-of-Words Exporter pivots instance id, attribute name, attribute value triples into a sparse matrix.
Figure 3 Development of the gold standard. ICD, International Classification of Diseases, Ninth Revision; VACS, Veterans Aging Cohort Study.
Figure 3 Development of the gold standard. ICD, International Classification of Diseases, Ninth Revision; VACS, Veterans Aging Cohort Study.
Figure 4 Dimensions of the document corpus.
Figure 4 Dimensions of the document corpus.
Figure 5 Varices classification rule. If any one of the varices terms is affirmed more than it is negated, the tree assigns the document the class label ‘varices positive.’
Figure 5 Varices classification rule. If any one of the varices terms is affirmed more than it is negated, the tree assigns the document the class label ‘varices positive.’
Table 2 Classifier performance on test set
Table 2 Classifier performance on test set
Related topics:
EngineeringNatural Language ProcessingMachine LearningElectronic Health RecordsDocument ClassificationKnowledge ExtractionRadiology Information SystemsClinical Decision Support Systems
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